Answer:
(A) Increasing the frequency will provide better penetration and better resolution.
Explanation:
F = V/λ
Where;
F is the wave frequency
V is the wave velocity
λ is the wavelength
From the equation above; F∝ 1/λ
Wavelength is inversely proportional to the frequency, so higher frequencies generate shorter wavelengths and therefore better penetration. Also a higher frequency will also exhibit a better axial resolution.
Therefore, increasing the frequency will provide better penetration and better resolution.